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Volume 39 Issue 9
Sep 2025
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Chinese Journal of High Pressure Physics  > 2025  >  39(9): 094102.
CAI Zhoufeng, JIANG Yan, ZHANG Hao, LIU Mingtao. Statistical Law of Dynamic Fracture Strain Distribution of 6061 Aluminum Electromagnetic Expansion Ring[J]. Chinese Journal of High Pressure Physics, 2025, 39(9): 094102. doi: 10.11858/gywlxb.20251010
Citation: CAI Zhoufeng, JIANG Yan, ZHANG Hao, LIU Mingtao. Statistical Law of Dynamic Fracture Strain Distribution of 6061 Aluminum Electromagnetic Expansion Ring[J]. Chinese Journal of High Pressure Physics, 2025, 39(9): 094102. doi: 10.11858/gywlxb.20251010
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Statistical Law of Dynamic Fracture Strain Distribution of 6061 Aluminum Electromagnetic Expansion Ring

doi: 10.11858/gywlxb.20251010

  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

  • Received Date: 15 Jan 2025
  • Rev Recd Date: 02 Apr 2025
    • Available Online: 07 Apr 2025
  • Issue Publish Date: 05 Sep 2025
    Abstract
  • The fracture strain distribution of ductile metal rings under dynamic loading has significant application value, and the electromagnetic expansion ring is a commonly used experimental loading method. However, currently there is a lack of effective in-situ observation technology in experiments, making it impossible to obtain high-precision fracture strain statistical data. In this paper, the newly developed close-packed photonic Doppler velocimetry (PDV) array testing technology was applied to the electromagnetic expanding ring experiment, and a large amount of high-confidence fracture strain experimental data were obtained. The statistical distribution of material yield strength was obtained through hardness measurements, a probabilistic constitutive model was established, and large-scale computations were carried out to obtain a wealth of fracture strain simulation results. By combining experiments with simulations, the strain rate effect of dynamic fracture strain in 6061 aluminum electromagnetic expanding ring and the rationality of the Weibull distribution assumption for fracture strain were analyzed.

     

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